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                    2-2 Output
            
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                    2-3 Module
            
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                    2-4 Resolve
            
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                    2-5 Plugins
            
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                    2-7 其它配置项
            
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                    2-8 整体配置结构
            
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                    2-9 多种配置类型
            
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                    2-10 配置总结
            
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                    3-1 使用 ES6 语言
            
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                    3-3 使用 Flow 检查器
            
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                    3-4 使用 SCSS
            
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                    3-5 使用 PostCSS
            
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                    3-6 使用 React 框架
            
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                    3-10 管理多个单页应用
            
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                    3-11 构建同构应用
            
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                    3-12 构建 Electron 应用
            
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                    3-14 构建离线应用
            
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                    3-15 搭配 Npm Script
            
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                    3-16 检查代码
            
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                    3-17 通过 Node.js API 启动 Webpack
            
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                    3-19 加载图片
            
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                    3-20 加载SVG
            
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                    3-21 加载 Source Map
            
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                    3-22 实战总结
            
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                    4-2 使用 DllPlugin
            
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                    4-3 使用 HappyPack
            
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                    4-4 使用 ParallelUglifyPlugin
            
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                    4-5 使用自动刷新
            
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                    4-6 开启模块热替换
            
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                    4-7 区分环境
            
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                    4-8 压缩代码
            
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                    4-9 CDN 加速
            
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                    4-10 使用 Tree Shaking
            
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                    4-11 提取公共代码
            
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                    4-12 按需加载
            
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                    4-13 使用 Prepack
            
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                    4-14 开启 Scope Hoisting
            
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                    4-15 输出分析
            
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                    4-16 优化总结
            
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                    第5章 原理
            
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                    5-1 工作原理概括
            
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                    5-2 输出文件分析
            
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                    5-3 编写 Loader
            
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                    5-4 编写 Plugin
            
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                    5-5 调试 Webpack
            
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                    5-6 原理总结
            
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                    常用 Loaders
            
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                    常用 Plugins
            
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<p>&#x524D;&#x9762;&#x7684;&#x51E0;&#x8282;&#x53EA;&#x662F;&#x8BA9; Webpack &#x6B63;&#x5E38;&#x8FD0;&#x884C;&#x8D77;&#x6765;&#x4E86;&#xFF0C;&#x4F46;&#x5728;&#x5B9E;&#x9645;&#x5F00;&#x53D1;&#x4E2D;&#x4F60;&#x53EF;&#x80FD;&#x4F1A;&#x9700;&#x8981;&#xFF1A;</p>
<ol>
<li>&#x63D0;&#x4F9B; HTTP &#x670D;&#x52A1;&#x800C;&#x4E0D;&#x662F;&#x4F7F;&#x7528;&#x672C;&#x5730;&#x6587;&#x4EF6;&#x9884;&#x89C8;&#xFF1B;</li>
<li>&#x76D1;&#x542C;&#x6587;&#x4EF6;&#x7684;&#x53D8;&#x5316;&#x5E76;&#x81EA;&#x52A8;&#x5237;&#x65B0;&#x7F51;&#x9875;&#xFF0C;&#x505A;&#x5230;&#x5B9E;&#x65F6;&#x9884;&#x89C8;&#xFF1B;</li>
<li>&#x652F;&#x6301; Source Map&#xFF0C;&#x4EE5;&#x65B9;&#x4FBF;&#x8C03;&#x8BD5;&#x3002;</li>
</ol>
<p>&#x5BF9;&#x4E8E;&#x8FD9;&#x4E9B;&#xFF0C; Webpack &#x90FD;&#x4E3A;&#x4F60;&#x8003;&#x8651;&#x597D;&#x4E86;&#x3002;Webpack &#x539F;&#x751F;&#x652F;&#x6301;&#x4E0A;&#x8FF0;&#x7B2C;2&#x3001;3&#x70B9;&#x5185;&#x5BB9;&#xFF0C;&#x518D;&#x7ED3;&#x5408;&#x5B98;&#x65B9;&#x63D0;&#x4F9B;&#x7684;&#x5F00;&#x53D1;&#x5DE5;&#x5177; <a href="https://webpack.js.org/configuration/dev-server/" target="_blank">DevServer</a> &#x4E5F;&#x53EF;&#x4EE5;&#x5F88;&#x65B9;&#x4FBF;&#x5730;&#x505A;&#x5230;&#x7B2C;1&#x70B9;&#x3002;
DevServer &#x4F1A;&#x542F;&#x52A8;&#x4E00;&#x4E2A; HTTP &#x670D;&#x52A1;&#x5668;&#x7528;&#x4E8E;&#x670D;&#x52A1;&#x7F51;&#x9875;&#x8BF7;&#x6C42;&#xFF0C;&#x540C;&#x65F6;&#x4F1A;&#x5E2E;&#x52A9;&#x542F;&#x52A8; Webpack &#xFF0C;&#x5E76;&#x63A5;&#x6536; Webpack &#x53D1;&#x51FA;&#x7684;&#x6587;&#x4EF6;&#x66F4;&#x53D8;&#x4FE1;&#x53F7;&#xFF0C;&#x901A;&#x8FC7; WebSocket &#x534F;&#x8BAE;&#x81EA;&#x52A8;&#x5237;&#x65B0;&#x7F51;&#x9875;&#x505A;&#x5230;&#x5B9E;&#x65F6;&#x9884;&#x89C8;&#x3002;</p>
<p>&#x4E0B;&#x9762;&#x4E3A;&#x4E4B;&#x524D;&#x7684;&#x5C0F;&#x9879;&#x76EE; <code>Hello,Webpack</code> &#x7EE7;&#x7EED;&#x96C6;&#x6210; DevServer&#x3002;
&#x9996;&#x5148;&#x9700;&#x8981;&#x5B89;&#x88C5; DevServer&#xFF1A;</p>
<pre><code class="lang-bash">npm i -D webpack-dev-server
</code></pre>
<p>&#x5B89;&#x88C5;&#x6210;&#x529F;&#x540E;&#x6267;&#x884C; <code>webpack-dev-server</code> &#x547D;&#x4EE4;&#xFF0C; DevServer &#x5C31;&#x542F;&#x52A8;&#x4E86;&#xFF0C;&#x8FD9;&#x65F6;&#x4F60;&#x4F1A;&#x770B;&#x5230;&#x63A7;&#x5236;&#x53F0;&#x6709;&#x4E00;&#x4E32;&#x65E5;&#x5FD7;&#x8F93;&#x51FA;&#xFF1A;</p>
<pre><code>Project is running at http://localhost:8080/
webpack output is served from /
</code></pre><p>&#x8FD9;&#x610F;&#x5473;&#x7740; DevServer &#x542F;&#x52A8;&#x7684; HTTP &#x670D;&#x52A1;&#x5668;&#x76D1;&#x542C;&#x5728; <code>http://localhost:8080/</code> &#xFF0C;DevServer &#x542F;&#x52A8;&#x540E;&#x4F1A;&#x4E00;&#x76F4;&#x9A7B;&#x7559;&#x5728;&#x540E;&#x53F0;&#x4FDD;&#x6301;&#x8FD0;&#x884C;&#xFF0C;&#x8BBF;&#x95EE;&#x8FD9;&#x4E2A;&#x7F51;&#x5740;&#x4F60;&#x5C31;&#x80FD;&#x83B7;&#x53D6;&#x9879;&#x76EE;&#x6839;&#x76EE;&#x5F55;&#x4E0B;&#x7684; <code>index.html</code>&#x3002;
&#x7528;&#x6D4F;&#x89C8;&#x5668;&#x6253;&#x5F00;&#x8FD9;&#x4E2A;&#x5730;&#x5740;&#x4F60;&#x4F1A;&#x53D1;&#x73B0;&#x9875;&#x9762;&#x7A7A;&#x767D;&#x9519;&#x8BEF;&#x539F;&#x56E0;&#x662F; <code>./dist/bundle.js</code> &#x52A0;&#x8F7D;404&#x4E86;&#x3002;
&#x540C;&#x65F6;&#x4F60;&#x4F1A;&#x53D1;&#x73B0;&#x5E76;&#x6CA1;&#x6709;&#x6587;&#x4EF6;&#x8F93;&#x51FA;&#x5230; <code>dist</code> &#x76EE;&#x5F55;&#xFF0C;&#x539F;&#x56E0;&#x662F; DevServer &#x4F1A;&#x628A; Webpack &#x6784;&#x5EFA;&#x51FA;&#x7684;&#x6587;&#x4EF6;&#x4FDD;&#x5B58;&#x5728;&#x5185;&#x5B58;&#x4E2D;&#xFF0C;&#x5728;&#x8981;&#x8BBF;&#x95EE;&#x8F93;&#x51FA;&#x7684;&#x6587;&#x4EF6;&#x65F6;&#xFF0C;&#x5FC5;&#x987B;&#x901A;&#x8FC7; HTTP &#x670D;&#x52A1;&#x8BBF;&#x95EE;&#x3002;
&#x7531;&#x4E8E; DevServer &#x4E0D;&#x4F1A;&#x7406;&#x4F1A; <code>webpack.config.js</code> &#x91CC;&#x914D;&#x7F6E;&#x7684; <code>output.path</code> &#x5C5E;&#x6027;&#xFF0C;&#x6240;&#x4EE5;&#x8981;&#x83B7;&#x53D6; <code>bundle.js</code> &#x7684;&#x6B63;&#x786E; URL &#x662F; <code>http://localhost:8080/bundle.js</code>&#xFF0C;&#x5BF9;&#x5E94;&#x7684; <code>index.html</code> &#x5E94;&#x8BE5;&#x4FEE;&#x6539;&#x4E3A;&#xFF1A;</p>
<pre><code class="lang-html"><span class="hljs-tag">&lt;<span class="hljs-name">html</span>&gt;</span>
<span class="hljs-tag">&lt;<span class="hljs-name">head</span>&gt;</span>
  <span class="hljs-tag">&lt;<span class="hljs-name">meta</span> <span class="hljs-attr">charset</span>=<span class="hljs-string">&quot;UTF-8&quot;</span>&gt;</span>
<span class="hljs-tag">&lt;/<span class="hljs-name">head</span>&gt;</span>
<span class="hljs-tag">&lt;<span class="hljs-name">body</span>&gt;</span>
<span class="hljs-tag">&lt;<span class="hljs-name">div</span> <span class="hljs-attr">id</span>=<span class="hljs-string">&quot;app&quot;</span>&gt;</span><span class="hljs-tag">&lt;/<span class="hljs-name">div</span>&gt;</span>
<span class="hljs-comment">&lt;!--&#x5BFC;&#x5165; DevServer &#x8F93;&#x51FA;&#x7684; JavaScript &#x6587;&#x4EF6;--&gt;</span>
<span class="hljs-tag">&lt;<span class="hljs-name">script</span> <span class="hljs-attr">src</span>=<span class="hljs-string">&quot;bundle.js&quot;</span>&gt;</span><span class="undefined"></span><span class="hljs-tag">&lt;/<span class="hljs-name">script</span>&gt;</span>
<span class="hljs-tag">&lt;/<span class="hljs-name">body</span>&gt;</span>
<span class="hljs-tag">&lt;/<span class="hljs-name">html</span>&gt;</span>
</code></pre>
<h2 id="&#x5B9E;&#x65F6;&#x9884;&#x89C8;">&#x5B9E;&#x65F6;&#x9884;&#x89C8;</h2>
<p>&#x63A5;&#x7740;&#x4E0A;&#x9762;&#x7684;&#x6B65;&#x9AA4;&#xFF0C;&#x4F60;&#x53EF;&#x4EE5;&#x8BD5;&#x8BD5;&#x4FEE;&#x6539; <code>main.js main.css show.js</code> &#x4E2D;&#x7684;&#x4EFB;&#x4F55;&#x4E00;&#x4E2A;&#x6587;&#x4EF6;&#xFF0C;&#x4FDD;&#x5B58;&#x540E;&#x4F60;&#x4F1A;&#x53D1;&#x73B0;&#x6D4F;&#x89C8;&#x5668;&#x4F1A;&#x88AB;&#x81EA;&#x52A8;&#x5237;&#x65B0;&#xFF0C;&#x8FD0;&#x884C;&#x51FA;&#x4FEE;&#x6539;&#x540E;&#x7684;&#x6548;&#x679C;&#x3002;</p>
<p>Webpack &#x5728;&#x542F;&#x52A8;&#x65F6;&#x53EF;&#x4EE5;&#x5F00;&#x542F;&#x76D1;&#x542C;&#x6A21;&#x5F0F;&#xFF0C;&#x5F00;&#x542F;&#x76D1;&#x542C;&#x6A21;&#x5F0F;&#x540E; Webpack &#x4F1A;&#x76D1;&#x542C;&#x672C;&#x5730;&#x6587;&#x4EF6;&#x7CFB;&#x7EDF;&#x7684;&#x53D8;&#x5316;&#xFF0C;&#x53D1;&#x751F;&#x53D8;&#x5316;&#x65F6;&#x91CD;&#x65B0;&#x6784;&#x5EFA;&#x51FA;&#x65B0;&#x7684;&#x7ED3;&#x679C;&#x3002;Webpack &#x9ED8;&#x8BA4;&#x662F;&#x5173;&#x95ED;&#x76D1;&#x542C;&#x6A21;&#x5F0F;&#x7684;&#xFF0C;&#x4F60;&#x53EF;&#x4EE5;&#x5728;&#x542F;&#x52A8; Webpack &#x65F6;&#x901A;&#x8FC7; <code>webpack --watch</code> &#x6765;&#x5F00;&#x542F;&#x76D1;&#x542C;&#x6A21;&#x5F0F;&#x3002;</p>
<p>&#x901A;&#x8FC7; DevServer &#x542F;&#x52A8;&#x7684; Webpack &#x4F1A;&#x5F00;&#x542F;&#x76D1;&#x542C;&#x6A21;&#x5F0F;&#xFF0C;&#x5F53;&#x53D1;&#x751F;&#x53D8;&#x5316;&#x65F6;&#x91CD;&#x65B0;&#x6267;&#x884C;&#x5B8C;&#x6784;&#x5EFA;&#x540E;&#x901A;&#x77E5; DevServer&#x3002;
DevServer &#x4F1A;&#x8BA9; Webpack &#x5728;&#x6784;&#x5EFA;&#x51FA;&#x7684; JavaScript &#x4EE3;&#x7801;&#x91CC;&#x6CE8;&#x5165;&#x4E00;&#x4E2A;&#x4EE3;&#x7406;&#x5BA2;&#x6237;&#x7AEF;&#x7528;&#x4E8E;&#x63A7;&#x5236;&#x7F51;&#x9875;&#xFF0C;&#x7F51;&#x9875;&#x548C; DevServer &#x4E4B;&#x95F4;&#x901A;&#x8FC7; WebSocket &#x534F;&#x8BAE;&#x901A;&#x4FE1;&#xFF0C;
&#x4EE5;&#x65B9;&#x4FBF; DevServer &#x4E3B;&#x52A8;&#x5411;&#x5BA2;&#x6237;&#x7AEF;&#x53D1;&#x9001;&#x547D;&#x4EE4;&#x3002;
DevServer &#x5728;&#x6536;&#x5230;&#x6765;&#x81EA; Webpack &#x7684;&#x6587;&#x4EF6;&#x53D8;&#x5316;&#x901A;&#x77E5;&#x65F6;&#x901A;&#x8FC7;&#x6CE8;&#x5165;&#x7684;&#x5BA2;&#x6237;&#x7AEF;&#x63A7;&#x5236;&#x7F51;&#x9875;&#x5237;&#x65B0;&#x3002;</p>
<p>&#x5982;&#x679C;&#x5C1D;&#x8BD5;&#x4FEE;&#x6539; <code>index.html</code> &#x6587;&#x4EF6;&#x5E76;&#x4FDD;&#x5B58;&#xFF0C;&#x4F60;&#x4F1A;&#x53D1;&#x73B0;&#x8FD9;&#x5E76;&#x4E0D;&#x4F1A;&#x89E6;&#x53D1;&#x4EE5;&#x4E0A;&#x673A;&#x5236;&#xFF0C;&#x5BFC;&#x81F4;&#x8FD9;&#x4E2A;&#x95EE;&#x9898;&#x7684;&#x539F;&#x56E0;&#x662F; Webpack &#x5728;&#x542F;&#x52A8;&#x65F6;&#x4F1A;&#x4EE5;&#x914D;&#x7F6E;&#x91CC;&#x7684; <code>entry</code> &#x4E3A;&#x5165;&#x53E3;&#x53BB;&#x9012;&#x5F52;&#x89E3;&#x6790;&#x51FA; <code>entry</code> &#x6240;&#x4F9D;&#x8D56;&#x7684;&#x6587;&#x4EF6;&#xFF0C;&#x53EA;&#x6709; <code>entry</code> &#x672C;&#x8EAB;&#x548C;&#x4F9D;&#x8D56;&#x7684;&#x6587;&#x4EF6;&#x624D;&#x4F1A;&#x88AB; Webpack &#x6DFB;&#x52A0;&#x5230;&#x76D1;&#x542C;&#x5217;&#x8868;&#x91CC;&#x3002;
&#x800C; <code>index.html</code> &#x6587;&#x4EF6;&#x662F;&#x8131;&#x79BB;&#x4E86; JavaScript &#x6A21;&#x5757;&#x5316;&#x7CFB;&#x7EDF;&#x7684;&#xFF0C;&#x6240;&#x4EE5; Webpack &#x4E0D;&#x77E5;&#x9053;&#x5B83;&#x7684;&#x5B58;&#x5728;&#x3002;</p>
<h2 id="&#x6A21;&#x5757;&#x70ED;&#x66FF;&#x6362;">&#x6A21;&#x5757;&#x70ED;&#x66FF;&#x6362;</h2>
<p>&#x9664;&#x4E86;&#x901A;&#x8FC7;&#x91CD;&#x65B0;&#x5237;&#x65B0;&#x6574;&#x4E2A;&#x7F51;&#x9875;&#x6765;&#x5B9E;&#x73B0;&#x5B9E;&#x65F6;&#x9884;&#x89C8;&#xFF0C;DevServer &#x8FD8;&#x6709;&#x4E00;&#x79CD;&#x88AB;&#x79F0;&#x4F5C;&#x6A21;&#x5757;&#x70ED;&#x66FF;&#x6362;&#x7684;&#x5237;&#x65B0;&#x6280;&#x672F;&#x3002;
&#x6A21;&#x5757;&#x70ED;&#x66FF;&#x6362;&#x80FD;&#x505A;&#x5230;&#x5728;&#x4E0D;&#x91CD;&#x65B0;&#x52A0;&#x8F7D;&#x6574;&#x4E2A;&#x7F51;&#x9875;&#x7684;&#x60C5;&#x51B5;&#x4E0B;&#xFF0C;&#x901A;&#x8FC7;&#x5C06;&#x88AB;&#x66F4;&#x65B0;&#x8FC7;&#x7684;&#x6A21;&#x5757;&#x66FF;&#x6362;&#x8001;&#x7684;&#x6A21;&#x5757;&#xFF0C;&#x518D;&#x91CD;&#x65B0;&#x6267;&#x884C;&#x4E00;&#x6B21;&#x6765;&#x5B9E;&#x73B0;&#x5B9E;&#x65F6;&#x9884;&#x89C8;&#x3002;
&#x6A21;&#x5757;&#x70ED;&#x66FF;&#x6362;&#x76F8;&#x5BF9;&#x4E8E;&#x9ED8;&#x8BA4;&#x7684;&#x5237;&#x65B0;&#x673A;&#x5236;&#x80FD;&#x63D0;&#x4F9B;&#x66F4;&#x5FEB;&#x7684;&#x54CD;&#x5E94;&#x548C;&#x66F4;&#x597D;&#x7684;&#x5F00;&#x53D1;&#x4F53;&#x9A8C;&#x3002;
&#x6A21;&#x5757;&#x70ED;&#x66FF;&#x6362;&#x9ED8;&#x8BA4;&#x662F;&#x5173;&#x95ED;&#x7684;&#xFF0C;&#x8981;&#x5F00;&#x542F;&#x6A21;&#x5757;&#x70ED;&#x66FF;&#x6362;&#xFF0C;&#x4F60;&#x53EA;&#x9700;&#x5728;&#x542F;&#x52A8; DevServer &#x65F6;&#x5E26;&#x4E0A; <code>--hot</code> &#x53C2;&#x6570;&#xFF0C;&#x91CD;&#x542F; DevServer &#x540E;&#x518D;&#x53BB;&#x66F4;&#x65B0;&#x6587;&#x4EF6;&#x5C31;&#x80FD;&#x4F53;&#x9A8C;&#x5230;&#x6A21;&#x5757;&#x70ED;&#x66FF;&#x6362;&#x7684;&#x795E;&#x5947;&#x4E86;&#x3002;</p>
<h2 id="&#x652F;&#x6301;-source-map">&#x652F;&#x6301; Source Map</h2>
<p>&#x5728;&#x6D4F;&#x89C8;&#x5668;&#x4E2D;&#x8FD0;&#x884C;&#x7684; JavaScript &#x4EE3;&#x7801;&#x90FD;&#x662F;&#x7F16;&#x8BD1;&#x5668;&#x8F93;&#x51FA;&#x7684;&#x4EE3;&#x7801;&#xFF0C;&#x8FD9;&#x4E9B;&#x4EE3;&#x7801;&#x7684;&#x53EF;&#x8BFB;&#x6027;&#x5F88;&#x5DEE;&#x3002;&#x5982;&#x679C;&#x5728;&#x5F00;&#x53D1;&#x8FC7;&#x7A0B;&#x4E2D;&#x9047;&#x5230;&#x4E00;&#x4E2A;&#x4E0D;&#x77E5;&#x9053;&#x539F;&#x56E0;&#x7684; Bug&#xFF0C;&#x5219;&#x4F60;&#x53EF;&#x80FD;&#x9700;&#x8981;&#x901A;&#x8FC7;&#x65AD;&#x70B9;&#x8C03;&#x8BD5;&#x53BB;&#x627E;&#x51FA;&#x95EE;&#x9898;&#x3002;
&#x5728;&#x7F16;&#x8BD1;&#x5668;&#x8F93;&#x51FA;&#x7684;&#x4EE3;&#x7801;&#x4E0A;&#x8FDB;&#x884C;&#x65AD;&#x70B9;&#x8C03;&#x8BD5;&#x662F;&#x4E00;&#x4EF6;&#x8F9B;&#x82E6;&#x548C;&#x4E0D;&#x4F18;&#x96C5;&#x7684;&#x4E8B;&#x60C5;&#xFF0C;
&#x8C03;&#x8BD5;&#x5DE5;&#x5177;&#x53EF;&#x4EE5;&#x901A;&#x8FC7; <a href="https://www.html5rocks.com/en/tutorials/developertools/sourcemaps/" target="_blank">Source Map</a> &#x6620;&#x5C04;&#x4EE3;&#x7801;&#xFF0C;&#x8BA9;&#x4F60;&#x5728;&#x6E90;&#x4EE3;&#x7801;&#x4E0A;&#x65AD;&#x70B9;&#x8C03;&#x8BD5;&#x3002;
Webpack &#x652F;&#x6301;&#x751F;&#x6210; Source Map&#xFF0C;&#x53EA;&#x9700;&#x5728;&#x542F;&#x52A8;&#x65F6;&#x5E26;&#x4E0A; <code>--devtool source-map</code> &#x53C2;&#x6570;&#x3002;
&#x52A0;&#x4E0A;&#x53C2;&#x6570;&#x91CD;&#x542F; DevServer &#x540E;&#x5237;&#x65B0;&#x9875;&#x9762;&#xFF0C;&#x518D;&#x6253;&#x5F00; Chrome &#x6D4F;&#x89C8;&#x5668;&#x7684;&#x5F00;&#x53D1;&#x8005;&#x5DE5;&#x5177;&#xFF0C;&#x5C31;&#x53EF;&#x5728; Sources &#x680F;&#x4E2D;&#x770B;&#x5230;&#x53EF;&#x8C03;&#x8BD5;&#x7684;&#x6E90;&#x4EE3;&#x7801;&#x4E86;&#x3002;</p>
<p><img src="img/1-6source-map.png" alt="&#x56FE;1.6.1 &#x5728;&#x5F00;&#x53D1;&#x8005;&#x5DE5;&#x5177;&#x4E2D;&#x8C03;&#x8BD5; Source Map"></p>
<blockquote>
<p>&#x672C;&#x5B9E;&#x4F8B; <a href="http://webpack.wuhaolin.cn/1-6&#x4F7F;&#x7528;DevServer.zip" target="_blank">&#x63D0;&#x4F9B;&#x9879;&#x76EE;&#x5B8C;&#x6574;&#x4EE3;&#x7801;</a></p>
</blockquote>

                                
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